.top_1{
	border:1px lightblue solid;
	width:100%;
	height:120px;
	frameborder:0;
	}
	
.menu_1{
	border:1px lightblue solid;
	height:500px;
	width:15%;
	}
	.main_content{
	border:1px lightblue solid;
	width:65%;
	height:500px;
	}
	.main_right{
	margin-left:-4px;
	border:1px lightblue solid;
	width:19%;
	height:500px;
	}